Display having a graphical user interface



FIG. 1 is a front view of a display having a graphical user interface showing our new design in a first embodiment;

FIG. 2 is the front view thereof in a second embodiment;

FIG. 3 is the front view thereof in a third embodiment; and,

FIG. 4 is the front view thereof in a fourth embodiment shown on a device.

The evenly spaced broken lines represent portions of the display having a graphical user interface. The dot-dash broken lines represent bounds of the claimed design. The broken lines showing a device in FIG. 4 represent environmental subject matter. The broken lines form no part of the claimed design. 

CLAIM We claim the ornamental design for a display having a graphical user interface, as shown and described. 